The viaduct is a raised structure measuring 1.4 kilometres long, with four access and exit points, between the Ngong Shuen Chau Viaduct and the Eagle's Nest Tunnel. With the aim of contributing to sustainable development through the use of environmentally friendly techniques, ACCIONA used recycled concrete during landfill work at the Lai Chi Kok Viaduct (LCKV) in Hong Kong.
The majority of the viaduct was constructed using a system of prefabricated concrete cantilever beams, with spans ranging between 45 and 85 metres. ACCIONA used recycled concrete during the sanitary landfill operations for this project. The viaduct was completed in December 2006.
The environmental benefits of using recycled concrete included the following: